• Download Serial Com Device Port Devices Driver Printer
• Download Serial Com Device Port Devices Drivers
• Download Serial Com Device Port Devices Driver Windows 7

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A named device object that is created by a non-WDM driver typically has an MS-DOS device name. An MS-DOS device name is a symbolic link in the object manager with a name of the form DosDevicesDosDeviceName.

An example of a device with an MS-DOS device name is the serial port, COM1. It has the MS-DOS device name DosDevicesCOM1. Likewise, the C drive has the name DosDevicesC:.

WDM drivers do not usually supply MS-DOS device names for their devices. Instead, WDM drivers use the IoRegisterDeviceInterface routine to register a device interface. The device interface specifies devices by their capabilities, rather than by a particular naming convention. For more information, see Device Interface Classes.

Because from what i am reading, changing the com port number in the ini file, will allow you to control what com port gets assigned to the Topaz device in Windows. Are you using the topaz HSB to Com driver? If so this document might be helpful. Steps 4 and 5 explain how to modify the SigPlus.ini file to set the com port that you need it to use. Unknown devices show up in the Windows Device Manager when Windows can’t identify a piece of hardware and provide a driver for it. An unknown device isn’t just unknown — it’s not functioning until you install the right driver. Windows can identify most devices and download drivers for them automatically.

Drivers are required to supply an MS-DOS device name only if the device is required to have a specific well-known MS-DOS device name to work with user-mode programs.

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A driver supplies an MS-DOS device name for a device object by using the IoCreateSymbolicLink routine to create a symbolic link to the device. For example, the following code example creates a symbolic link from DosDevicesDosDeviceName to DeviceDeviceName.

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Note that the system supports multiple versions of the DosDevices directory. Make sure that your driver creates its symbolic links in the version that you intend. For more information, see Local and Global MS-DOS Device Names.

To access the DosDevices namespace from user mode, specify . when you open a file name. You can open a corresponding device in user mode by calling CreateFile().

For example, the following code example opens the DosDevicesDosDeviceName device in user mode.

Download Serial Com Device Port Devices Driver Windows 7

A symbolic link can also be created from a user-mode application by using the user-mode DefineDosDevice routine. For more information, see the Microsoft Windows SDK.